Questions tagged [motor]
An electrical actuator that converts electrical energy into rotational motion or sustained linear motion (linear motor). If the specific type of motor is known, it is helpful to use or add a more specific tag, such as dc-motor, brushless-dc motor or induction-motor.
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How Should I Model Eddy Currents in a Magnetic Core?
simulate this circuit – Schematic created using CircuitLab
simulate this circuit
I'm primarily a VHDL and DSP guy, so I apologize in advance if this question is dumb.
I have wire wrapped around ...
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In case of a dc shunt motor, can you use the back emf equation(Eb=ZNPPhi/60A) for the shunt winding (field winding)?
In case of a dc shunt motor, can you use the back emf equation(Eb=ZNPPhi/60A) for the shunt winding (field winding)?
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STM32IDE & DC Motor - Tracking Motor rotation
Is there a way for a microcontroller (STM32) to track DC motor rotation?
Currently in class supposed to connect a DC motor of our choosing to a microcontroller, rotate it by 5 degrees and track the ...
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Connecting bi-directional single-phase motors in parallel [closed]
I have an application that uses a 220 V AC 50 Hz motor. The motor has two live connections and a neutral. Connecting the different live connections will reverse the direction and you can have the ...
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Time delay circuit to reverse the rotation of DC motor when input is high
I am trying to design a circuit to use to control a DC motor according to the output of a capacitive proximity detector.
The circuit should turn ON the DC motor in forward direction when the hand ...
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Temperature controlled fan using LM358
According to the circuit diagram image and below video I uploaded, voltage between the motor is not stable. What can I do? In Proteus the simulation of motor runs differently so to fix this, any ...
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Addition of a voltage selector switch for a dual-voltage motor
I have a 3hp, single-phase 120V / 220 V, 1750rpm, 184t frame size, compressor-duty motor.
I would like to include a voltage selector switch in the junction box, to select 30A 120 V or 30 A 220 V ...
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Terminal inductance of a brushless EC motor [closed]
How can I find the terminal inductance of an EC brushless motor? I have the phase-to-phase terminal inductance if it helps.
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How to power servo motors?
I built a robotic arm consisting of three MG 996R servo and three MG 90S servo. How to power them externally? I used three batteries of 3.7 volt but they are getting discharged left and right.
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Identifying silver oval-shaped components on a DC motor [duplicate]
DC motor pulled off an ABS unit:
What are the two little silver oval things in this DC motor? Are they PTC resistors? Why does this particular motor have three carbon brushes? Some have said that it ...
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How to add LED array to 110VAC AC circuit that includes small motor
I'm building a small machine that uses 110 VAC to power a small (14 W) motor. I want to add an LED array that a switch activated by the motor turns on and off. (The motor will also be gearing some ...
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Can I use just two relays to switch between two 3-phase brushless motors sharing the same driver?
I have a 36V DC 3A (max) 3-phase brushless motor with it's own driver. I have a spare motor and I want to leave both motors connected to the same driver all the time, but only one motor will ever be ...
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How can I convert a Noma Ornamotion Christmas tree ornament motor to USB power?
I have a small motor that plugs into the light socket of a incandescent mini light set and spins an ornament. They were called Ornamotion spinning motors.
Now that we're moving to LED, the LED sets ...
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What are these connections - External rotor motor
I have an external rotor motor with the following connections.
The power is quite clear. I assume F/R is forward and reverse but I am not sure ACC, DEC, and MFG. I assume they are some sort of motor ...
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Ferrite Topology For Motor PWM
Brushed motors are pretty noisy devices, especially when driven with PWM. There are a number of techniques to reduce the transmitted noise (twisting wires, shielding etc) - one of these is using a ...
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BLDC motor position control
For my project, I need to control position and speed of a BLDC motor with PID. Although there is information about the speed control of the motor, I could not find much information about the position ...
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Controlling Brushless Motor ESC Remotely
I currently have this https://a.co/d/hen7RIb brushless motor ESC from Amazon. I need this to accept a different input than the potentiometer. Right now for remote control we have this ESC connected to ...
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Controlling a DC motor with a potentiometer
I am trying to make a circuit with:
USB to open (5V)
5V DC motor
50 ohm potentiometer
I've forgotten a lot of the basics, and I just want to verify that this would work. I was going to connect the ...
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If I have a 500ohm resistor in series with 3V motor, with an input voltage of 5V, will it work?
Here is a picture of the circuit I wish to make: Resistor, motor, switch, buzzer
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Balloon inflator rocker or micro switch stops working
I designed a balloon inflator that uses a 120v, 6.6A, 800w motor with a power load of 700 and unload of 772 and it uses two types of switches one is a micro switch (10A, 125v)used on the nozzles for ...
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Magnetic interaction between resolver & motor windings?
Scenario: Synchronous electric motor whose rotor position is measured by a resolver.
Won't the magnetic field created by the motor stator & rotor, link with the primary & secondary windings ...
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PMSM - Motor values for a simulation
I have a simulation of a PMSM using a ElectroCraft RPX22-042V24 Motor. For some testing purposes I need to increase the rpm by a lot. I am thinking about 30-40 000 rpm. Of course I searched for a ...
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How can 120V fail to spin an AC motor that spins fine with 120V on a different power source?
While troubleshooting a home appliance, I found something odd: a 120V AC refrigerator fan stopped spinning despite being connected to 120V AC voltage (verified with my multimeter) inside the ...
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Which motor wire corresponds to which phase
I have a three phase motor having 3 wires: red, black and white. But the product datasheet does not tell us which colour wire corresponds to which phase.
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Determining the voltage applied to a motor from an H-Bridge
I have to replace some old (no longer manufactured) H-Bridges with new ones that are preferably the same form factor. I'm trying to understand the datasheets, but I don't see where it states the ...
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Delta star, beginner question
Hi, can someone tall me why the line comes from behind the motor and comes back in front of it.
Is it because internal connection is crossed? for example, u->x v-y w->z. What am I missing?
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How to program Motor Controller via SPI
I am using Allegro A4962. Our college course requires us to use an industrial grade motor controller like this one which must be interfaceable to external power mosfets, have PWM as the only input, ...
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Wind Turbine Generator [closed]
Can an unstable and low current supply from a 7V wind turbine dc generator motor charge a 24V lithium-ion battery? If yes, how will it be done?
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3-phase induction motor starting current calculation
I'm trying to calculate the starting current of a motor (460 VAC @ 60 Hz) using the datasheet information I shared. Am I suppose to use the ratio given under "starting values" for current?
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Motor feedback Control
Problem
Ok, so I'm a bit new to EE, but I've gotta run a 12v brushed DC motor run at a fairly consistent rate.
Parts
I've selected Pololu's Jrk G2 for the job. https://www.pololu.com/docs/0J73
And ...
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Best motor for generating a variable stall torque
What is the best electrical motor for generating a variable amount of stall torque? The motor would be used in a VR haptic glove application.
It would be placed on the hand/forearm, and would apply ...
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24 volt DC motor, No drive belt attached to motor, motor pulses, when speed increased, attached a belt to dive a shaft. pulsing stopped? [duplicate]
Apologies in advance for my very basic explanation of the problem I have experienced, as I'm a very amateur hobbyist.
I have a project I am working on, which has a 230volt AC power supply wired to a ...
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DC Motor temperature
Im running a 18v Cordless drill motor (probably a RS 555 i dont have any info as it only says Black and decker LD120) with a bts 7960 and 12v ATX Power supply.
I have used it for my purpose for like 2 ...
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Traction characteristic of the three phase induction motor
I have found a datasheet for a three phase induction motor intended for the traction applications. Among other information there was a below given traction characteristic
. Unfortunately I am not able ...
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Identifying various parts on a DC motor from a hybrid vehicle ABS pump
I have a DC motor that I pulled off of an ABS pump from a hybrid vehicle. My original purpose was to first clean the dust from brushes off. Then I reinstalled it into the ABS. It worked for a while ...
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Joint actuator consideration for quadruple robot
I’m in the process of building a hybrid robot between wheel and leg so that it could traverse different terrain effectively. I’m not planning to implement any complicate galloping or jumping on my ...
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How can I increase the output voltage without changing the motor and turbine design?
I made a small hydropower project for school. Water flow rate is too low. I attached 24 V DC gear motor. The output is 4 V. How can I increase it?
I can not change the turbine dimensions and motor and ...
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Sizing capacity of a 1-phase breaker to feed a VFD and a 3-phase motor
I have a 3 phase 2HP motor that draws 5.8Amps at 240v
I want to feed it with a VFD with the following specs:
VFD rated power: 4kW
1-phase input: 36 Amps
3-phase output: 18.5 Amps
The VFD is of ...
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Can Hall sensors be placed externally in a small BLDC motor?
I'm trying to build a closed loop control for a BLDC motor with the use of Hall effect sensors. The problem is that I can't find a sensored BLDC motor at all in my country. All the available BLDC ...
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Will relays benefit from protection in form of a flyback diode?
If an inductive DC load is controlled via a relay, would that relay need or benefit from a flyback diode for protection from the loads off switching voltage spikes?
Note that this is not about a diode ...
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Programmable Controller for Sensorless BLDC Motor
I'm trying to find a programmable controller (or system for controlling) a sensorless BLDC motor - 24V, 20A. I want to control speed, fwd/rev, and dwell time in certain positions. Apologies if this ...
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How does citrus juicer randomly change its direction? [closed]
I dismantled my electric citrus juicer and wanted to understand how the simple motor, coil and wiring could make the juicer switch its rotation direction randomly, each time the shaft is pressed.
I'm ...
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MOSFET VGS rating with Stepper Driver
I am building a PCB that consists of a stepper motor driver (DRV8711) and had a confusion with the N-Channel MOSFET selection. I will power the driver through a 50V supply and the driver mentions ...
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Hook up for Dayton AC motor with direction control
I have a Dayton single phase motor 1/2 HP and I need to control it's direction with two push button switches. Push and hold button1 for to turn on in CW direction, release and the motor stops. Push ...
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DC motor operation at no load
I was solving a DC shunt motor question where no load is specified to:
Speed=1000 rpm
Rated armature current=3.33 A
Rated voltage=230 V
And
Ra=0.3
Rsh=160
Line current = 40 A (at full current)
were ...
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Does "Torque control" using FOC consider input (battery) voltage drop?
All information related to Torque Control using FOC technique consider a current control, so they suppose a correlation between req_Id (Id desired) and requested mechanical torque. PI regulators ...
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Brushless DC Motor -> Generator Power
I would like to know the approximate Voltage I could produce if I used this motor as a generator... If anyone could help me out with this I would greatly appreciate it!
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Use nickel as a flux ring
I'm designing an outrunner for a specific application. Rather than use steel to hold the magnets in the flux ring, can pure nickel be used? Nickel is a magnetic material, but has decent oxidation ...
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How to release "idle" brake of a three-phase motor? [closed]
I am using a three-phase motor (Segmotor SS Serie) with a VFD (Delta VFD-EL-W).
When not under tension, the motor's shaft is blocked by a brake.
How can I bypass this brake?
(either directly on the ...
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Why is the gate resistance of this PMOS so low? It should be very high
I'm looking for PMOS with BJT
to drive a load (motor,) that is controlled by a microcontroller (IO_FET):
The motor needs three amperes of current.
I looked at the manufacturer's pages of the PMOS (...
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